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Current Applied Physics, Vol.20, No.10, 1190-1194, 2020
High-speed residue-free transfer of two-dimensional materials using PDMS stamp and water infiltration
A high-speed residue-free transfer method using PDMS (polydimethylsiloxane) stamp and water infiltration between graphene and a hydrophilic surface is reported. Monolayer graphene was transferred from an enhanced fluorinated Al2O3 surface using PDMS. Water infiltration dramatically reduced the time required to separate the graphene from the Al2O3 substrate to a few minutes. The graphene was then successfully transferred to a target substrate (SiO2) using the PDMS stamp. Atomic force microscopy and lateral force microscopy was used to confirm the absence of residue on the transferred graphene surface.